#### Answer

$\frac{160+s}{3}$

#### Work Step by Step

We average the three scores (78, 82, and s):
$\frac{78+82+s}{3}=\frac{160+s}{3}$

Published by
Brooks Cole

ISBN 10:
1305115546

ISBN 13:
978-1-30511-554-5

$\frac{160+s}{3}$

We average the three scores (78, 82, and s):
$\frac{78+82+s}{3}=\frac{160+s}{3}$

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